Resilient mounting



'Ap'il 4, 1939. F NEWMAN 2,153,387 r SILIENT MOUNTING Filed' Dec. 18.19.56

InvntoT DjeIbertF? Newman,

is Attorney.

Ein" TATE PATENT OFFICE RE SILIENT MOUNTING Deibert F. Newman,Schenectafly, N. Y., assignor to General Electric Company, a corporationof New York Application December 18, 1936, Serial No. 116586 1 Clain.

My invention relates to resilient mountings. More particularly, myinvention relates to resilient mountings for motor -compressor units ofrefrigerating machines.

In many refrigerating machines and, particularly, in those designed fordomestic use, a cabinet is provided having a food storage compartmenttherein. The machine also includes a motor-compressor unit forcompressing gaseous refrigerant. The compressed refrigerant is liquefiedby a suitable condenser and is supplied to an expansion type coolingunit located in the food storage compartment of the cabinet. In order toprovide a self-contained refrigerating ma chine, it -is desirable thatthe motor-compressor unit be enclosed in a casing and that this casingtogether with the condenser be mounted on the cabinet. Themotor-compressor unit is resiliently mounted on a series of helicalsprings secured to the base of the enclosing casing in order to minimizethe transmission of vibration from the motor-compressor unit to thecabinet.

It is an object of my invention to provide an improved resilientmounting for the motor-compressor unit of a refrigerating machineof thetype described which has a minimum number c i parts and which isinexpensive to manuiacture.

Further objects and advantages of my invention will become apparent asthe following description proceeds, and the features of novelty whichcharacterize my invention will be pointed out with particularity in theclaim annexed to and forming a part of this specification.`

For a better understanding of my invention,

reference may be had to the accompanying drawing in which Fig. 1 is afront elevation of a por'- tion of a refrigerating machine having amotorcompressor unit supported upon a resilientmounting embodying myinvention; Fig. 2 is an exploded View of the resilient mounting shown inFig. 1, showing the same in an initial stage of Construction; Fig. 3 isa vertical sectional view of the resilient mounting shownin Fig. 1; and'Fig. 4 is a bottom View along the line 1-4 of the resilient mountingshown in Flg. 3.

Referring to the drawing, in Fig. 1 I have shown a portion of arefrigerating machine t mounted on a removable top wall of a cabinet,

which is shown having a metal outer shell o and a sheet metal innerliner ll of a food storagecompartment l2 in the cabinet. The outer shello and the innerliner l I are separated by a layer of heat insulatngmaterial l 3. The food storage compartment l2 formed in the cabinet iscooled by an evaporator N Suspended beneath the top a flow controllingfioat valve l'i. The liquid re-` frigerant supplied to the evaporator Mis vaporized by the absorption of heat from articles contained in thefood storage compartment !2 and the vaporized refrigerant is withdrawnthererom through a suction conduit Ia communicating with the interior ofan hermeticallysealed casing !9 so that this casing is subjected to thelow pressure maintained in the evaporator. The gaseous refrigerant inthe casing !9 is compressed by motor-compressor unit 20 and dischargedthrough a conduit 2! to the air-cooled 'condenser !5.

The motor-compressor unit 20 is resiliently mounted on a series ofspaced helical springs 22 Secured to the bottom wall or base 23 of thecasing I 9 to allow the mortor-compressor unit to move on the springswith respect to the casing s, thus preventing the transmission ofvibration from the motor-compressor unit to the cabinet. One end of eachof the springs 22 is securely fastened to a threaded boss 24 welded orotherwise rigidly attached to the wall 23 while the other end of thespring is securely fastened to a bracket 25 rigidly attached to themotor-compressor unit 20, as best shown in Figs. 3 and 4. The bracket 25comprises a unitary structure formed of sheet metal and includes a body26 and an integral stem 21. The body 26 is substantially U-shaped,having legs 28 flared outwardly in opposite directions and rigidlyattached to the motor-compressor unit 20 preferably by the fusicn ofmetal such, for example, as spot welding or the like. The stem 21 isshaped substantially in. the form of a split cylinder 'and is providedwith a number of indentations '29 in its inner surface constitutingthreads clamping and securely fastening the coils of the spring 22thereto. On each side of the bracket 25 are provided Slots 30 `disposedbetween the outwardly flared legs 28 of the l body 26 and the curvedends'of the stem 21 to allow the upper end o! the spring 22 to beresiliently gripped and securely fastened to the threaded stem 21.

In making the resilient mounting described being flared outwardly inopposite directions and the-ends of the'stem portion 21 extendingsubstantially parallel to each other. Also, a. plurality of bosses :Iare provided the legs 28 of the body portion 26 in order to facilitatespot welding of these legs to the motor-compressor unit 20.

Three brackets 25 so formed are positioned about the motor-compressorunit in 'equally spaced relation to correspond to the spacing of thesprings 22 about the base oi the caslng I! and the legs 28 thereof arewelded to the motor compressor unit. The lower end of each of aplurality of springs 22 is securely fastened t'o one of the threadedbosses 24 spaced about the base 23 of the casing !9. The motorcompressorunit 20 having the brackets 25 attached thereto is then placed into thecasing !9 in superposed relationship with respect to the ends of theupstanding springs 22. The upper end of each of the springs 22 is placedbetween the substantially parallel extending ends of the stem portion 21of one of the brackets 25 with the coils of the spring in registry withthe indentations 29 formed in the inner surface of the steni portion 21.

. portions 21 are then bent towards each other.

about the spring 22 therebetween, 'into substantially the shape of asplit cylinder bringing the indentation 29 into registry and threadedengagement with the coils of the spring 22. This The ends of each of thestem &158387 -U-shaped bracket, the legs 28 oi the body 28 method ofmaking the resilient mounting is described and claimed in my copendingapplication, serial No. 147.947, filed June 12, 1937, which is adivision of the present application. p

'nie resllient mounting described above lends itself particularly wellto quantity production due to the small number of parts from which theresilient mounting is constructed and'the simple manner in which theseparts are constructed.

While I have shown a particular embodiment of my invention in connectionwith a motorcompressor unit of a refrigerating machine designed fordomestic use, I do not desire my infor supporting said machine on saidspring, saidbracket including a body and a stem, said body havinglegsfiared outwardly in opposite directions and Secured to said machine, andmeans including indentations formed in said stem and engaglng the coilsof said spring for securing said stem thereto.

DELBERT F. NEWMAN.

